Radiator in central heating installations



Sept. 11, 1951 K. JANlK 2,567,515

RADIATOR IN CENTRAL HEATING iNSTALLATIONS Filed Sept. 29, 1948 Patented Sept. 11, 1951 UNITED ST ram OFFICE RADIATOR IN CENTRAL HEATING INSTALLATIONS Karl J anik, Linz, Donau, Austria.

1 Claim.

The object of the invention is a radiator for central heating installations, and the like, made from sheets, and in particular from steel sheets.

The invention aims at creating a radiator, the manufacturing costs of which as to materials required and wages paid is cheaper than the radiators known, owing to its reduced weight, its simplicity, and the small amount of materials required.

Besides, the radiator according to the invention presents the advantage that the ratio between its surface and its filling volume is a very favourable one, and that the heat available in the heating medium is more easily transmitted to the surrounding air, i. e. that its coefficient of efiiciency is higher so that smaller dimensions are sufilcient for attaining the same heating efiect.

Moreover, the radiator according to the invention is distinguished by its pleasant exterior, and by the simplicity of its shape facilitating the removal of dust.

Further advantages of the invention will be: come apparent from the radiator described hereinafter and shown in the drawing which is to be considered as exemplifying an embodiment of the invention.

Fig. 1 is a perspective illustration of a radiator.

Figs. 2 and 3 show a part each of a horizontal section through the radiator at the level of the lines II-II and III-III of Fig. 1, respectively.

Fig. 4 is a plan of the two sheets which constitute the radiator, before their being united, and

Fig. 5 shows a detail.

The radiator shown in the drawing consists of two rectangular steel sheets of plates l0 and l l of equal size, bent according to serpentine lines, and tightly connected with each other e. g. by welding along their four edges. At the upper and the lower edge l2, l2 the sheets are smooth and even up to about one sixth of their width, and are spaced at a slight distance from each other so as to constitute in between a feed channel l3 continuous from one end to the other, and a discharge channel l3 of similar character. To the wall of the channel I 3 the influx or supply branch I 4 for the heating medium is fitted, whereas the discharge or outlet branch I4 is fixed to the wall of the channel I 3.

Of the sheets forming the intermediate area between the smooth-walled marginal sections the one is always smooth while the other is corrugated so as to constitute transversely located grooves. As is clearly apparent from Fig. 4, showing the two sheets before their conjunction, those areas l6 of each sheet are corrugated which form the outer parts of the arc, whereas the areas [1, located inside, are smooth. When inserted within each other, as shown in Fig. 3, the sheets will contact or lie closely to each other in such a 2 manner that, as a result of the corrugation of the one part, transversal tubular channels I8 are formed. designed to connect the channels l3 and I3 with each other.

Out of the inlet branch M the heating medium flows into the channel [3, yields its heat to the surrounding metal when passing through the small channels 18 and flows out through the channel I3 and the discharge branch I4.

The cross-sectional profile of the corrugation may, of course, be designed as desired. It may, for instance, be rectangular, trapezoidal. or the like.

The radiator according to the invention isin proportion to its weightpossessed of a far greater surface of heat transmission than the majority of the cast iron radiators.

It is easy and sim le to clean the outer i. e. the heat emitting faces of the radiator as these are exclusively cylindrical and easily accessible.

The ratio of the filling volume to the surface can be modified by altering the corrugations.

The radiator according to the invention may also be used in other cases where great surfaces for heat emission are required, e. g. as cooling coil or condensor in refrigerating plants and the like.

What I claim is:

Radiator for central heating installations, consisting of two sheets fixedly connected at their edges and in their longitudinal direction bent so as to form a serpentine line, said sheets being spaced at their upper and lower edges so as to form one inlet and one outlet channel, while in the intermediate area the sheet located at the outside of the arc of the serpentine line is corrugated, the inside of the arc of said sheet being smooth, both sheets being adjacent each other, and forming a great number of small channels, designed to transversely connect the inlet channel and the outlet channel.

KARL JANIK.

REFERENCE S CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,023,793 Andrews et a1 Apr. 23, 1912 1,792,768 Robitaille Feb. 17, 1931 1,804,083 Berlin May 5, 1931 1,897,113 Doucet Feb. 14, 1933 2,271,437 Lewis Jan. 27, 1942 FOREIGN PATENTS Number Country Date 373,454 Great Britain May 26, 1932 477,106 Great Britain Dec. 22, 1937 

